# NTSB CHI93LA094: Beech B90, N442TC, Albert Lea, MN, February 23, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 23, 1993, 12:35 local (18:35 UTC)
- Place: Albert Lea, MN
- Coordinates: 43.650047, -93.360466 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.6500&lon=-93.3605&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report February 10, 1994
- Report: Approved by Office Director
- NTSB case key (mKey): 15671
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI93LA094
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15671/pdf
- Page: https://openairdocs.org/ntsb/CHI93LA094

## Probable cause

AN INADVERTENT STALL DUE TO ICE IN THE PITOT/STATIC SYSTEM.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight collision with terrain/water, approach - vfr pattern - final approach
  - terrain condition - snowbank
  - stall/mush - inadvertent, pilot in command (cause)
  - pitot/static system - ice (cause)
- Complete gear collapsed, landing - roll
  - landing gear - overload

## Analysis

THE PILOT STATED THAT WHEN THE FLIGHT WAS ON FINAL APPROACH, 'THE AIRCRAFT SUDDENLY STOPPED FLYING AND CONTACTED THE SNOW...CAME TO A STOP ABOUT 500 FEET DOWN THE RUNWAY ON THE CENTERLINE. ALL 3 GEARS WERE FOLDED BACK.' THE AIRPLANE HAD BEEN WASHED THE NIGHT BEFORE AND THEN ROLLED OUTSIDE INTO -5 DEGREE TEMPERATURE. ICE WAS FOUND IN THE AIRPLANE STATIC SYSTEM.

## Aircraft

- Registration: [N442TC](https://openairdocs.org/deregistered/N442TC-2012-11-09), registration cancelled 2012-11-09, S/N LJ-332, built 1967 (OpenAirDocs)
- Reported make and model: BEECH B90
- Registry model: [Beech B90](https://openairdocs.org/model/beech-b90) (registry code 1152912) (OpenAirDocs)
- Registry engine: [U/A Canada PT6 SER 578HP](https://openairdocs.org/engine/u-a-canada-pt6-ser-578hp) (registry code 61501, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: LJ-332
- Airframe hours: 10992
- Engines: P&W PT-6A-20 550 horsepower turbo prop
- Damage: Substantial damage
- Flight: Executive/Corporate, Part 91
- Operator: Mtc Leasing
- Registered owner: Mtc Leasing
- Airworthiness certificate: Standard, Normal
- Last inspection: AAIP, October 31, 1992, 68 hours before
- Departed: OWA, OWATONNA, MN
- Airport: AEL, Albert Lea Municipal, runway 34, 4,500 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 65; airline transport; airplane ratings: single-engine sea, multi-engine sea, single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 5,000 total, 605 in this make and model, 5,000 as pilot in command, 15 in the last 90 days, 15 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 150° at 23 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 3 °F, dew point -0 °F
- Altimeter: 30.00 inHg
- Observed at: AEL, 1 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19930223003169A](https://openairdocs.org/incident/19930223003169A), Feb 23, 1993: Beech B90, Albert Lea, MN, Substantial damage. Dropped out on short final for landing. Struck snowbank and landed on runway. Ice in static system. Airspeed error.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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